function rf() {
	return false; 
}
document.oncontextmenu = rf;
function keydown() {
	if(event.ctrlKey ==true || event.keyCode ==93 || event.shiftKey ==true) {
		return false;
	} 
}
document.onkeydown = keydown;
function drag() {
	return false;
}
document.ondragstart = drag;
function stopmouse(e) {
	if (navigator.appName == 'Netscape' && (e.which == 3 || e.which == 2)) {
		return false;
	} else if (navigator.appName == 'Microsoft Internet Explorer' && (event.button == 2 || event.button == 3)) {
		return false;
	}
	return true;
}
document.onmousedown=stopmouse;
if (document.layers) {
	window.captureEvents(Event.MOUSEDOWN);
}
window.onmousedown=stopmouse;